uplot-vplugins/Dist/Utils/@Ext/Distr.js

Plugins for uPlot, by Venryx.

function roundDec(val, dec) {
    return Math.round(val * (dec = 10 ** dec)) / dec;
}
export const SPACE_BETWEEN = 1;
export const SPACE_AROUND = 2;
export const SPACE_EVENLY = 3;
const coord = (i, offs, iwid, gap) => roundDec(offs + i * (iwid + gap), 6);
export function distr(numItems, sizeFactor, justify, onlyIdx, each) {
    const space = 1 - sizeFactor;
    let gap = (justify == SPACE_BETWEEN ? space / (numItems - 1) :
        justify == SPACE_AROUND ? space / (numItems) :
            justify == SPACE_EVENLY ? space / (numItems + 1) : 0);
    if (isNaN(gap) || gap == Infinity)
        gap = 0;
    const offs = (justify == SPACE_BETWEEN ? 0 :
        justify == SPACE_AROUND ? gap / 2 :
            justify == SPACE_EVENLY ? gap : 0);
    const iwid = sizeFactor / numItems;
    const _iwid = roundDec(iwid, 6);
    if (onlyIdx == null) {
        for (let i = 0; i < numItems; i++)
            each(i, coord(i, offs, iwid, gap), _iwid);
    }
    else
        each(onlyIdx, coord(onlyIdx, offs, iwid, gap), _iwid);
}